From owner-freebsd-security@FreeBSD.ORG Fri Sep 26 16:51:51 2014 Return-Path: Delivered-To: freebsd-security@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 9A73AC05 for ; Fri, 26 Sep 2014 16:51:51 +0000 (UTC) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:1900:2254:206c::16:87]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 76BE07A9 for ; Fri, 26 Sep 2014 16:51:51 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.9/8.14.9) with ESMTP id s8QGppHC099933 for ; Fri, 26 Sep 2014 16:51:51 GMT (envelope-from bdrewery@freefall.freebsd.org) Received: (from bdrewery@localhost) by freefall.freebsd.org (8.14.9/8.14.9/Submit) id s8QGppmE099931 for freebsd-security@freebsd.org; Fri, 26 Sep 2014 16:51:51 GMT (envelope-from bdrewery) Received: (qmail 40766 invoked from network); 26 Sep 2014 11:51:49 -0500 Received: from unknown (HELO ?10.10.0.24?) (freebsd@shatow.net@10.10.0.24) by sweb.xzibition.com with ESMTPA; 26 Sep 2014 11:51:49 -0500 Message-ID: <5425999A.3070405@FreeBSD.org> Date: Fri, 26 Sep 2014 11:51:38 -0500 From: Bryan Drewery Organization: FreeBSD User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.1.2 MIME-Version: 1.0 To: Bartek Rutkowski Subject: Re: bash velnerability References: <00000148ab969845-5940abcc-bb88-4111-8f7f-8671b0d0300b-000000@us-west-2.amazonses.com> <54243F0F.6070904@FreeBSD.org> <54244982.8010002@FreeBSD.org> <16EB2C50-FBBA-4797-83B0-FB340A737238@circl.lu> <542596E3.3070707@FreeBSD.org> In-Reply-To: OpenPGP: id=6E4697CF; url=http://www.shatow.net/bryan/bryan2.asc Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="va42hkwdeprlC58M2DtxTtuMo0MD5Dhxs" X-Mailman-Approved-At: Fri, 26 Sep 2014 20:56:09 +0000 Cc: freebsd-security , freebsd-ports X-BeenThere: freebsd-security@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: "Security issues \[members-only posting\]" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 26 Sep 2014 16:51:51 -0000 This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --va42hkwdeprlC58M2DtxTtuMo0MD5Dhxs Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 9/26/2014 11:46 AM, Bartek Rutkowski wrote: > On Fri, Sep 26, 2014 at 6:40 PM, Bryan Drewery w= rote: >> On 9/26/2014 2:36 AM, Steve Clement wrote: >>> Dear all, >>> >>> In case you urgently need to go the manual route, here is one way to = really patch your systems: >>> >>> https://www.circl.lu/pub/tr-27/ >>> >>> Until the patch is in the bash upstream=E2=80=A6 (which it might be b= y now) >>> >>> Take care, >>> >> >> The port has had the fixes since yesterday. The packages are building.= >> >> -- >> Regards, >> Bryan Drewery >> >=20 > Apparently, the full fix is still not delivered, accordingly to this: > http://seclists.org/oss-sec/2014/q3/741 >=20 > Kind regards, > Bartek Rutkowski >=20 I'm pretty sure they call that a "feature". This is a bit different. This is modifying the command used to call a function as the feature intends. The vulnerability was that just parsing the environment would execute the code. TL;DR; You should cleanse your environment and only accept valid input to work around this feature. The bash developer (Chet) said he would not remove it by default, at least a few days ago. --=20 Regards, Bryan Drewery --va42hkwdeprlC58M2DtxTtuMo0MD5Dhxs Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (MingW32) iQEcBAEBAgAGBQJUJZmaAAoJEDXXcbtuRpfPQUEIANGtu3zTUyewl5OETRpraWdD c7WlFWEFH4/KZ6f5BtuD6ozE4RIiTEJRnoKSczOJo11ZBVajD9cjRXO46ujpCqth ZRAtUXsTak8RwuDOdTwV4EUhUdCwGgXBNBfPAiVwmNYShMyREsmnSsHaIiE6+9XU 4r/ZIEymp8aDY8nTvVhpWvfm/qs1Y80YIepqto+HR1PJAXinR10Bxek2JOJtQOFW LCJObtSC4KntsNl5m/zJ7AyaNRysvUSTvukH/PnO9ArH4e4/ehlTyjh0DnjGcxtW jUuYEbbO9D/QWxNseM1rLKCHcgVcH0U/+lRlqJiFUSgSQIKbNS/Ru4W91NGmFR0= =MHTp -----END PGP SIGNATURE----- --va42hkwdeprlC58M2DtxTtuMo0MD5Dhxs--